She may feel uncomfortable playing 10k matches in China facing players she is familiar.

Furthermore, long time partner and friend Peng said that she would not team-up regularly with Hsieh in doubles while good friendship remaining because Peng felt that she would no longer be powerful enough to support Hsieh in front of the net. (They did schedule to play doubles in Guangzhou)

Also it would be embarrassing, I guess, to see Chuang in every China tournaments.